Home / 13,898.51-19,182.90-8,861.57

Finding the Fourth Proportional to 13,898.51, 19,182.90 and 8,861.57

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Solution

The fourth proportional to 13,898.51, 19,182.90 and 8,861.57 is: 12,230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,898.51 : 19,182.90 = 8,861.57 : x
  2. Step 2: Convert to fraction form
    13,898.51/19,182.90 = 8,861.57/x
  3. Step 3: Cross multiply
    13,898.51x = 19,182.90 × 8,861.57
  4. Step 4: Simplify right side
    13,898.51x = 169,990,515.24
  5. Step 5: Solve for x
    x = 169,990,515.24/13,898.51
  6. Step 6: Final answer
    x = 12,230.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.